Its d the cell wall. The plant cell contains a cell wall that is absent in a animal cell.
I believe, for the artery, they have, an open, circular lumen an a thick media
Veins on the other hand, have somewhat collapsed lumen and a thinner media. Arteries are blood vessels that carry blood out of the heart to other parts of the body, all arteries carry oxygenated blood except the pulmonary artery which carries deoxygenated blood from the heart to the lungs. Veins carry blood from other body parts to the heart, all veins carry deoxygenated blood except the pulmonary vein which caries oxygenated blood from the lungs to the heart.
The outer skeleton provides protection due to the fact that invertebrates do not have backbones
Answer:
The thermosphere is the outer layer of the Earth's atmosphere, extending from about 53 miles to more than 370 miles above the surface. The temperature increases rapidly in this layer due to the absorption of huge amounts of incoming high energy solar radiation by atoms of nitrogen and oxygen.
Explanation:
These groups of cells is called tissue.
Explanation:
Tissue is known as group of cells who has similar type of structure and it acts together for performing the specific function. Muscles, nervous, epithelial and connective are four types of tissue which is present in animal cell.
Epidermal, ground and vascular are plant tissue. Group of tissue is responsible for making up organs in the body for example heart and brain. Connective tissue helps to connect or separate the tissue.
